Lock mechanism.



J. H. STODDART.

LOCK MECHANISM.

APPLICATION FILED {UNE 18. 1917.

Patented Jan. 1,1918

I 2 SHEETSSHEET L r JOHN H. STODDART, OF JAMESTOWN, NORTH DAKOTA.

LOCK MECHANISM.

Specification of Letters Patent.

Patented Jan. 1, 1918.

Application filed June 18, 1917. Serial No. 175,472.

To all whom it may concern:

Be it known that I, JOHN H. STODDART, a citizen of the United States,residing at Jamestown, in the county of Stutsman and State of NorthDakota, have invented certain new and useful Improvements in LockMechanism; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same. X

This invention relates to certain new and useful improvements in locks.

The primary object of the invention is to provide a locking mechanismwhich is particularly designed to be used in connection with adevice toengage the clutch lever or pedal of an automobile when the latter is tobe parked to prevent said lever or pedal from being moved out of itsnormal position.

A further object of the invention is to generally improve upon devicesof this class by the provision of a comparatively simple, strong,durable and inexpensive construction, one which will be efiicient andreliable in operation and well adapted to the purpose for which it isdesigned.

WVith these and other objects in view, the invention consists of certainnovel 'features of construction, and the combination and arrangement ofparts as will be hereinafter fully described and claimed.

In the accompanying drawings forming a part of the application and inwhich similar reference characters designate corresponding partsthroughout the several views:

Figure 1 is a side elevation'of a device constructed in accordance withthis invention, illustrating it in operative position upon the clutchlover of an automobile;

Fig. 2 is an elevation of another side of the device applied to theautomobile;

Fig. 3 is a perspective view of the device detached;

Fig. 4 is an end view of thesame;

Fig. 5 is a sectional view through the device taken on the planeindicated by the line 55 of Fig. 1; and,

Figs. 6 and 7 are sectional views taken on the planes of the lines 66and 7-7 respectively of Fig. 5.

Referring more particularly to the drawings, the numeral 1 represents asa whole a. sleeve consisting of two sections 2 and 3 which are hingcdlyconnected at one of their sides as at 4 and provided with.the improvedlocking'meclinnism, to be hereinafter more fully described, on theirdiametrically opposite sides. '-'lhese members 2 and 3 are sub--stantially U-shaped in transverse section so that when they are in theirrelative closed positions, a. longitudinally cxtendingopening is formedin the sleeve to receive the friction clutch lever A of an automobile,it beingunderstood that the sleeve surrounds the .same and is of suchlength that it will prevent the lever A from being moved out of cured tothe inner side of the dial member 8 by means of suitable pins 9 is a cammemher 10 having a plurality of recesses 11 theremy member 14 surroundsthe cam member 10. contacts at its outer side with the inner side of thedial 8, and is held in relatively fixed relation with respect to thecasing 5 by means of the lugs 13 in engagement with the slots 12.

The numeral 15 designates a rotatable member which is provided at oneside with a circular recess 16 to receive the stationary member 14: andthe cam member 10. The bottom of the member 15 is further provided witha square shaped recess 17 which receives the square shaped head 18 of acylindrical stem 19. This stem 19 extends through the central openingsin the cam member 10, the dial member 8, and a knob 20, said stem beingsecured to the knob in any suitable manner. Projecting centrally fromthe other side of the bottom of the rotatable member 15 is a short stem21 carrying a locking cross bar 22, the purpose of which will behereinafter described.

The mechanism just described is maintained in the casing by the flange 7of the dial 8 resting against the shoulder 6 of the casing and by meansof a plate 23 which is secured in any suitable manner to the other endof said casing. As shown, this plate is provided with a central openingto permit the stem 21 to pass therethrough and be disposed on theexterior of the casing. The stationary member 14 is provided with aplurality of radially extending openings, and in these openings areslidably mounted suitable detents or pins 24, the outer edges of whichare adapted to be disposed flush with the outer surface or side of themember 14: when the' cam member 10 is in such a position that the innerends of the detents will be received in the recesses 11. One of thedetents 24 is of less length than the others, and this detent isintended to fit in the shallow recess of the cam member. By thisconstruction, it may be seen that in order that the ends of all of thedetents be disposed flush with the outer side of the stationary member,the cam member will have to be in a certain definite position withrespect to the stationary member.

The rotatable member 15 is provided with a plurality of radiallyextending apertures to correspond with the openings in the stationarymember 14, and in these openings in the rotatable member are disposedcomparatively short detents or pins 25 which are adapted to bear againstthe detents or pins 24 carried by the stationary member, suitable coilsprings 26 holding the detents 25 in such position. It is to beunderstood that when the detents 24 are in their projected positions,their outer ends will be disposed beyond the outer side of thestationary member 14 and received in the apertures in the rotatablemember 15. The rotatable member 15 will thus be locked against movement,and inasmuch as the cross bar 22 is integrally formed with the member15, it will also be locked against movement. Cast integrally withsection 2 of the sleeve 1 adjacent the casing 5 is a keeper 27. Thiskeeper 27 is substantially hollow, having a recess 28 therein to receivethe bar to be inserted in this recess.

In using a device constructed in accordance with this invention, the twoportions of the locking mechanism are disengaged and the sections 2 and3 are swung to their relatively open positions. When in this position,the sleeve is disposed and clamped around the lever A, and the partslocked.

To open the lock, the dial 8 is first moved to a certain position whichis determined by' suitable graduations upon the dial and the casing, sothat the cam member 10 will be moved in order to allow the inner ends ofthe detents 24; to be received in the proper recesses 11. The knob 20may then be'operatcd to a certain definite position with relation to theother parts of the device which is determined by other graduations, soas to bring the bar 22 into registration with the opening 28 to allowsaid bar to be disengaged from the keeper.

From the foregoing description, taken in connection with theaccompanying drawing, the construction, use and operation of the devicewill be readily understood without a more extended explanation.

As various changes in form, proportion, and ii. the minor details ofconstruction, may

be resorted to without departing from the spirit of this invention, Iwish it to be understood that I do not limit myself to the preciseconstruction herein shown and de-' scribed.

I claim:

1. A device ofthe class described comprising a casing, a rotatablemember mounted in said casing and provided with a locking bar, astationary member mounted within said casing,.a plurality of radiallydisposed detents movably mounted upon said stationary member and adaptedto engage said rotatable member to lock the latter against movement, oneof said detents being of a different length from the others, a rotatablecam member operated independently of said rotatable member for operatingsaid detents and provided at its periphery with recesses for receivingsaid detents, one of said recesses being of a different depth from theothers to receive the detent which is of different length from the otherdetents, and a keeper to receive said locking bar.

2. A device of the class described comprising a casinga rotatable member'mounted therein and having a locking bar and a knob attached thereto,said bar and said knob being disposed on the exterior of said casing, astationary member mounted within said casing, a detent movably mountedon said stationary member and adapted to engage said movable member tolock the latter against movement, a cam member rotatably mounted withinsaid casing for actuating said detent and having a dial attached theretofor operating it independently of said rotatable member, and a keeper toreceive said locking bar.

3. A device of the c ass described comprising an annular casing, acircular rota table member mounted within said casing and having arecess on one side and a stem projecting from the other side thereof, across bar on the free end of said stem, an annular stationary memberdisposed within said recess and having lugs extending latering saidcasing to lock said stationary member against movement, a detent'slidably mounted in one side of said stationary memher and adapted toengage said rotatable member, a cam member rotatable Within said recessfor actuating said detent and having an opening extending centrallytherethrough, a dial connected to said cam member for rotating the sameand having an opening alined with the opening in the latter, a knobprovided with a stem extending through said ammo:

alined openings and attached to said totatable member to operate thesame independently or" said cam member, and a keeper to receive saidcross bar. 1

In testimony whereof I have hereunto set my hand in the presence of twosubscribing WltXWSSCS;

JOHN H. STODDART. Witnesses J. J. NIERLING, D. J. MASON.

